1 /*
2 * $Header: /home/jerenkrantz/tmp/commons/commons-convert/cvs/home/cvs/jakarta-commons//httpclient/src/java/org/apache/commons/httpclient/methods/multipart/FilePartSource.java,v 1.10 2004/04/18 23:51:37 jsdever Exp $
3 * $Revision: 480424 $
4 * $Date: 2006-11-29 06:56:49 +0100 (Wed, 29 Nov 2006) $
5 *
6 * ====================================================================
7 *
8 * Licensed to the Apache Software Foundation (ASF) under one or more
9 * contributor license agreements. See the NOTICE file distributed with
10 * this work for additional information regarding copyright ownership.
11 * The ASF licenses this file to You under the Apache License, Version 2.0
12 * (the "License"); you may not use this file except in compliance with
13 * the License. You may obtain a copy of the License at
14 *
15 * http://www.apache.org/licenses/LICENSE-2.0
16 *
17 * Unless required by applicable law or agreed to in writing, software
18 * distributed under the License is distributed on an "AS IS" BASIS,
19 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
20 * See the License for the specific language governing permissions and
21 * limitations under the License.
22 * ====================================================================
23 *
24 * This software consists of voluntary contributions made by many
25 * individuals on behalf of the Apache Software Foundation. For more
26 * information on the Apache Software Foundation, please see
27 * <http://www.apache.org/>.
28 *
29 */
30
31 package org.apache.commons.httpclient.methods.multipart;
32
33 import java.io.ByteArrayInputStream;
34 import java.io.File;
35 import java.io.FileInputStream;
36 import java.io.FileNotFoundException;
37 import java.io.IOException;
38 import java.io.InputStream;
39
40 /**
41 * A PartSource that reads from a File.
42 *
43 * @author <a href="mailto:becke@u.washington.edu">Michael Becke</a>
44 * @author <a href="mailto:mdiggory@latte.harvard.edu">Mark Diggory</a>
45 * @author <a href="mailto:mbowler@GargoyleSoftware.com">Mike Bowler</a>
46 *
47 * @since 2.0
48 */
49 public class FilePartSource implements PartSource {
50
51 /** File part file. */
52 private File file = null;
53
54 /** File part file name. */
55 private String fileName = null;
56
57 /**
58 * Constructor for FilePartSource.
59 *
60 * @param file the FilePart source File.
61 *
62 * @throws FileNotFoundException if the file does not exist or
63 * cannot be read
64 */
65 public FilePartSource(File file) throws FileNotFoundException {
66 this.file = file;
67 if (file != null) {
68 if (!file.isFile()) {
69 throw new FileNotFoundException("File is not a normal file.");
70 }
71 if (!file.canRead()) {
72 throw new FileNotFoundException("File is not readable.");
73 }
74 this.fileName = file.getName();
75 }
76 }
77
78 /**
79 * Constructor for FilePartSource.
80 *
81 * @param fileName the file name of the FilePart
82 * @param file the source File for the FilePart
83 *
84 * @throws FileNotFoundException if the file does not exist or
85 * cannot be read
86 */
87 public FilePartSource(String fileName, File file)
88 throws FileNotFoundException {
89 this(file);
90 if (fileName != null) {
91 this.fileName = fileName;
92 }
93 }
94
95 /**
96 * Return the length of the file
97 * @return the length of the file.
98 * @see PartSource#getLength()
99 */
100 public long getLength() {
101 if (this.file != null) {
102 return this.file.length();
103 } else {
104 return 0;
105 }
106 }
107
108 /**
109 * Return the current filename
110 * @return the filename.
111 * @see PartSource#getFileName()
112 */
113 public String getFileName() {
114 return (fileName == null) ? "noname" : fileName;
115 }
116
117 /**
118 * Return a new {@link FileInputStream} for the current filename.
119 * @return the new input stream.
120 * @throws IOException If an IO problem occurs.
121 * @see PartSource#createInputStream()
122 */
123 public InputStream createInputStream() throws IOException {
124 if (this.file != null) {
125 return new FileInputStream(this.file);
126 } else {
127 return new ByteArrayInputStream(new byte[] {});
128 }
129 }
130
131 }
Save This Page